Blood Sacrifice

By ritually sacrificing a portion of your blood, you invoke one of the following effects below for yourself and up to half your casting ability modifier (rounded down) creatures willing to accept the gift. You can choose different blessings for different creatures. The sacrificed blood causes the caster to suffer 3d6 Necrotic damage. This damage cannot be resisted. While concentrating on these effects, you gain a +2 bonus to all your concentration saving throws.  

• Crimson Pact: A creature gains resistance against all damage types for the duration.
• Bloodletting: A creature is healed for 2d6 each time they deal damage with a melee weapon attack for the duration.
• Bulwark of Blood: A creature gains temp. hit points equal to the casters level times the casters casting ability modifier for the duration.
• Sanguine Advance: A creature gains double their movement speed and cannot be subjected to attacks of opportunity for the duration. Lastly, the target gains a +2 bonus to their AC.
• Overflow: A creature deals additional damage on all spells equal to double the caster of this spell`s casting ability modifier for the duration.
• Blood Avatar: A creature grows one size larger, gains 15 temp. hit points and deals 1d6 additional damage on all melee weapon attacks for the duration.

If the concentration is broken, the effect afflicting all creatures will stop at the end of that creatures next turn.